21053664
21,053,664 is an even composite number composed of four prime numbers multiplied together.
21053664 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 21053664:
25 × 32 × 41 × 1783
(2 × 2 × 2 × 2 × 2 × 3 × 3 × 41 × 1783)See below for interesting mathematical facts about the number 21053664 from the Numbermatics database.
Names of 21053664
- Cardinal: 21053664 can be written as Twenty-one million, fifty-three thousand, six hundred sixty-four.
Scientific notation
- Scientific notation: 2.1053664 × 107
Factors of 21053664
Divisors of 21053664
- Number of divisors d(n): 72
-
Complete list of divisors:
1 2 3 4 6 8 9 12 16 18 24 32 36 41 48 72 82 96 123 144 164 246 288 328 369 492 656 738 984 1312 1476 1783 1968 2952 3566 3936 5349 5904 7132 10698 11808 14264 16047 21396 28528 32094 42792 57056 64188 73103 85584 128376 146206 171168 219309 256752 292412 438618 513504 584824 657927 877236 1169648 1315854 1754472 2339296 2631708 3508944 5263416 7017888 10526832 21053664
- Sum of all divisors σ(n): 61366032
- Sum of proper divisors (its aliquot sum) s(n): 40312368
- 21053664 is an abundant number, because the sum of its proper divisors (40312368) is greater than itself. Its abundance is 19258704
Bases of 21053664
- Binary: 10100000101000000111000002
- Hexadecimal: 0x14140E0
- Base-36: CJ940
Squares and roots of 21053664
- 21053664 squared (210536642) is 443256767824896
- 21053664 cubed (210536643) is 9332179055511371218944
-
The
square root of 21053664 is 4588.4271815079 -
The
cube root of 21053664 is 276.1272255289
Scales and comparisons
How big is 21053664?- 21,053,664 seconds is equal to 34 weeks, 5 days, 16 hours, 14 minutes, 24 seconds.
-
To count from 1 to 21,053,664 would take you about twelve hours!
This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
- A cube with a volume of 21053664 cubic inches would be around 23 feet tall.
Recreational maths with 21053664
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